Dam per-regulator



(ModeLjr Y I. CUMBERBATCH.

DAMPER REGULATOR. No. 283,578. I Y Patented Aug, 21, 1883,

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ATTORNEYS.

UNITED STATES Y PATENT OFFICE.

ISAAC CUMBERBATCH, OF NEWARK, NEW JERSEY.

DAMPER-REGULATOR.

SPECIFICATION' forming' To all whom t may concern:

Be it known that I, Isaac CUMBEEEATCH, of Newark, in the county of Essexand State of New Jersey, haveinvented certain new and usefulImprovements in Damper-Regulators for Steam-Boilers, of which thefollowing is a full, clear, and exact description.

` Reference is to be had to the accompanying drawings, `forming part ofthis specification, in which similar letters of reference iudicatecorresponding parts in both the figures.

Figure l is a iront elevation of my improvement, illustrating its use,the draft-fine and the smoke-stack being shown in section. Fig. 2 is asectional elevation of the improvement.

The object of this invention is to provide a simple and reliabledex-'ice for controlling the draft in a steam-boiler.

A is a small hollow cylinder or drum, which is closed at its lower endby a cap, B, and can be closed at its upper end by a cap, C, or leftopen, as may be desired.

Upon the center of the -lower cap, B, is formed a hollow nozzle, D,which has a screwthread formed upon its outer surface to screwy into ascrew-hole in the shell of a boiler, E, or in a pipe connected with thesteam-space of the said boiler, or with other steam-supply. Through theinterior of the hollow screw D and an aperture in the cap C, when used,passes a rod, F, which is made smaller than theinterior of the screw D,so that the steam can 'pass in around the said rod freely. The rod Falso passes through the interior of the hollow screw G, which is screwedinto the opening in the cap B, or into a screw-coupling screwed intoVthe said opening.

To the screw G is secured the perforated center of a concaved disk, H,to the edge of which is seamed or otherwise secured the edge of a disk,I, which is concayed in the opposite direction `fromthe disk H, forminga chamber inthe shape of a double cone. The disks H I are made ofelastic metal, and may have one or more pairs of similar disks connectedwith them. l

To the perforated center of the upper disk, l, ofthe pair or series issecured a female screw, J, which screws upon a screw-thread formed uponthe middle part of the rod F. Vith this part of Letters Patent No.283,578, dated August 21, 1883. Application tiled January 9, 1883.(Model.)

construction steam from the boiler 0r other steam-supply can enter theexpansion-chamber H I, and will cause the said chamber t0 expand andcontract as the steam-pressure increases and diminishes, the expansionof the chamber I-I I raising the rod F and the contraction ofthe saidchamber lowering the said rod. The resistance of the expansion-chamber HI to the steam-pressure can be regulated by weights K, placed upon theupper end of To the upper part ofthe rod F is hinge-d the end of alever, L, which is fulcrumed to a standard, M, secured to thecasing ofthe boil-.

the journal of the damper l?, placed in the draft-due Q, so that thesaid damper will be closed by the expansion oi' the chamber H l andopened by the contraction of dthe said chamber.

' The manner in which the rod F is connect ed with the damper-lever Owill depend upon the arrangement of the cylinder A in connection withthe flue Q. In some cases the rod F can be connected directly with thedamperlever O, reversely arranged.

If desire-(ha disk, l, can be fastened to the screw J atthe upper end ofthe expansionchamber H I, the said disk being made of such a size as toiit into the interior of the cylinder A, and thus center the saidchamber as it expands andy contracts. y

The gui cle-disk R need not be used when the cylinder A is provided witha cap, G.

I am aware that it is not new to arrange in a cylinder provided withsteam admission and discharge openings a spindle and annularspring-disks to form a spring regulator or governor; but

-' rhat I tion is- 1. The combination, with the bottom-closed drum A andcentral rod, F, of a series of concave-convex spring-disks, H I,connected together, forming one continuous interior cha-mber about therod, connecting closely with the rod at top, and communicating at thelower IOO end by an annular passage about the rod with the steam-spaceof a boiler, as shown and dcscribed.

2. The drunrcap B, having hollow screw D, and the bottom spring diskhaving hollow screw G, in combination with a hollow screw working in acentral thread of cap and'receiving the screw G in a female thread ofits upper part, said screws being all arranged in axial alignment, toform a communicating passage between the chamber within the spring andthe boiler, as shown and described.

3. VThe combination, with an outer nut and a thread on rod F, of theintermediate hollow nut, J, threaded externally and internally, to forma close connection between the rod and springs, as described.

4. The combination, with the expansible chamber formed by the springs HI, of the disk R, secured to and above said springs and 2o fitting thecylinder A,whereby the springs will expand and contract directly upward,as described. y v

5. The combination, with the rod F, rigidly attached to a chamberexpanded bly/steam, of 2 5 the lever L, rod N, lever O, and Valve P, thelatter arranged in the boiler-furnace flue Q, as shown and described.

ISAAC. CUMBERBATCH.

Witnesses: v

JAMEs T. GRAHAM, C. SEDGWICK.

